Home / 20,246.29-27,939.70-11,171.74

Finding the Fourth Proportional to 20,246.29, 27,939.70 and 11,171.74

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Solution

The fourth proportional to 20,246.29, 27,939.70 and 11,171.74 is: 15,416.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,246.29 : 27,939.70 = 11,171.74 : x
  2. Step 2: Convert to fraction form
    20,246.29/27,939.70 = 11,171.74/x
  3. Step 3: Cross multiply
    20,246.29x = 27,939.70 × 11,171.74
  4. Step 4: Simplify right side
    20,246.29x = 312,135,064.08
  5. Step 5: Solve for x
    x = 312,135,064.08/20,246.29
  6. Step 6: Final answer
    x = 15,416.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.